first implementation of ViennaGrid low level API
Merge branch 'FlorianRudolf/feature-circumcenter-points' into FlorianRudolf/feature-low-level-api
Merge branch 'FlorianRudolf/fix-named-segments' into FlorianRudolf/feature-low-level-api
free segment name point when setting new segment count, typo
added vertex_element_count query, fixed warnings
added example program
Merge branch 'FlorianRudolf/feature-low-level-api' into next
added is_any_boundary, determines if element is boundary of any segment of a segmentation
Merge branch 'FlorianRudolf/feature-is-boundary-for-segmentation' into next